Liquid spray dispenser



Feb. 19, 1957 E. o. STOCK EI'AL 2,782,072

LIQUID SPRAY DISPENSER Filed May 20. 1955.

United States Patent LIQUID SPRAY DISPENSER Erwin 0. Stock and Lester A. Stock, Newton, Wis.

Application May 20, 1955, Serial No. 509,916

2 Claims. (Cl. 299-86) The present invention relates to a liquid spray dispenser of the type used to produce a fog or fine spray of a fluid insecticide.

The primary object of the present invention is to provide a liquid spray dispenser which uses a minimum amount of liquid and requires air at only a moderate pressure for operation.

Another object of the present invention is to provide a liquid spray dispenser that is light weight and easily portable and one of such construction that it may be suspended from the end of an air hose in any place desired.

A further object of the present invention is to provide a liquid spray dispenser of simple construction, one economically manufactured and assembled, and one very effective in action.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawings, in which:

Figure 1 is a side view in elevation partially in crosssection showing the fluid spray dispenser of the present invention installed on the end of an air hose,

Figure 2 is an enlarged elevational view in crosssection,

Figure 3 is a vertical view greatly enlarged in crosssection on line 33 of Figure 1, and

Figure 4 is a vertical view greatly enlarged on line 4-4 of Figure 1.

Referring in greater detail to the drawings in which like numerals indicate like parts throughout the several views the liquid spray dispenser of the present dispenser consists in a receptacle having an open top with a cap or closure 11 extending over the open top and closing it. A spray-forming device, indicated generally by the reference numeral 12, is mounted in the opening in the closure 11 and includes an upright body 13 having its lower end 14 extending into the receptacle 10 and having its upper end 15 exteriorly of the receptacle.

The body 13 is provided with a first bore 16 extending upwardly from the lower end 14 and terminating at a point spaced from the upper end 15 of the body. A second bore 17 extends from the upper end 15 of the body inwardly to a point spaced from the terminating point of the first ,bore.

The side wall of the body 13 is provided with conically shaped recesses 18, here shown as four in number, each extending inwardly and connected to the lower end of the second bore 17 by a passage 19. Other passages 21 extend upwardly at an angle and connect the first bore 16 to each of the passages 19 at a point adjacent to the apex of the associated recess 18 and adjacent the point of connection of the passage 19 with the recess 18.

The upper end of the second bore 16 is provided with internal threads to connect it to a nipple 22 on the end of an air hose 23, as shown in Figure 1.

The lower end 14 of the body 13 is threaded externally, as indicated by the reference numeral 24, to receive a nut 25 for securing it to the closure 11. A flexible conduit 26 is disposed within the receptacle 10 and has its upper end provided with a connector 27 threadedly received in the first bore 16 and its lower end provided with a strainer assembly 28 and positioned adjacent to and spaced above the bottom of the receptacle 10.

fluid flowing upwardly through the flexible conduit 26 into the first bore 16 and thence into the passages 21, a partial vacuum forming at the junction of the passages 19 with the passages 21. It is to be noted that the air in the passage 19 and the liquid in the adjacent passage 21 contact each other at the shallow point of the associated recess 18, resulting in the formation of a spray wholly within the recess. By this arrangement the issuing streams of air and liquid from the passages 19 and 21, respectively, commingle and admix with each other and in controlled proportions.

Preferably, the body 13 is fabricated of brass or other material which will not corrode easily and the flexible conduit 26 is fabricated of a plastic or other inert material which will not react with the fluid to be sprayed.

When used to produce a fog of liquid insecticide in a dairy barn, the liquid spray dispenser may be provided with air under pressure using the compressor portion of the milking machine assembly or any other source of air under pressure available.

What is claimed is:

1. A liquid spray dispenser comprising a receptacle having an open top for a liquid to be sprayed, a closure closing said open top of said receptacle, said closure having an opening therein, a spray-forming device mounted in the opening in said closure, said device including an upright body supported intermediate its ends in the closure opening with its lower end extending into said receptacle and its upper end positioned exteriorly thereof, said body having a first bore extending inwardly from said lower end and terminating at a point spaced from the upper end thereof, a flexible conduit positioned within the receptacle and having one end connected in communication with said first bore and having its other end adjacent to and spaced above the bottom of said receptacle, there being a second bore in said body extending inwardly from its upper end and terminating a point spaced from the terminating point of said first bore, said second bore being of a larger diameter than said first bore, said second bore being adapted to be connected to a source of air pressure, said body having a plurality of recesses arranged in spaced relation and extending inwardly from the side wall thereof, said recesses all lying in the same plane, said body being provided with a passage connecting each of said recesses to the lower end of said second bore, said body being further provided with a plurality of passages each connecting the termination point of said first bore with the adjacent one of said second bores at a point adjacent the point of connection of said second bore with the associated recess, each of said second-named passages being arranged at an angle to the vertical, said closure also having an opening for the admission of outside air into said receptacle.

2. A liquid spray dispenser comprising a receptacle having an open top for a liquid to be sprayed, a closure closing said open top of said receptacle, said closure having an opening therein, a spray-forming device mounted in the opening in said closure, said device including an up right body supported intermediate its ends in the closure opening with its lower end extending into said receptacle and its upper end positioned exteriorly thereof, said body having a first bore extending inwardly from said lower end and terminating at a point spaced from the upper end thereof, a flexible conduit positioned Within the re ceptacle and having one end connected in communication with said first bore and having its other end adjacent to and spaced above the bottom of said receptacle, there being a second bore in said body extending inward- 15/ from its upper end and terminating at a point spaced from the terminating point of said first bore, said second bore being of a larger diameter than said first bore, said second bore being adapted to be connected to a source of air pressure, said body having a plurality of conically shaped recesses arranged in spaced relation and extending inwardly from the side Wall thereof, said recesses all lying in the same plane, said body being provided with a passage connecting each of said recesses to the lower end 15 of said second bore, said body being further provided with a plurality of passages each connecting the termination point of said first bore with the adjacent one of said second bores at a point adjacent to the apex of the associated recess, each of said second-named passages being arranged at an angle to the vertical, said closure also having an opening for the admission of outside air into said receptacle.-

References Gited in the file of this patent UNITED STATES PATENTS 

